This is the biography of a retired US Navy submarine skipper. It contains many adventures having nothing to do with submarines and also covers some period of time after the author returned to civilian life. It is full of his dry humor and anecdotes. Any person interested in naval history would like this book. It is well written and some of the historical material here has not been seen in print before.
Having known Mr. Kittredge when I was a kid, I enjoyed learning more about him, his time in the service, and his subs. I'd seen them before, but never in action.
My personal interest in the book helped with my rating; if I didn't have that connection I'd probably give it 3 stars. There are some typos in the printing, and it felt like some of the sections were written separately and then placed into chapters. The book also ended abruptly with no real wrap-up. There are also times when military jargon is used and it is assumed that the reader will understand.
Regarding the title, the incident of finding that factory is actually a minimal part in the middle of the story. There is much more about his time in the Navy during/after WWII and his exploits as a midget submarine builder after he retired.